Ore crusher and amalgamator



(No Model.) 2 sheets-sheet 1.

` J. SUTHER'LAND.

ORE GRUSHER AND AMALGAMATOR. No. 533,971. Patented Feb. 12, 1895,

.(No Model.) Az'sheets--sheet 2.

J.SUT11BRL111\111. ORE GRUSHBR AND'AMALGAMATOR,

110. 533,971.v Patented Feb. 12, 1895.

t fox y 1 UNITED. STATES `'PATENT GEEICE.

JAMES surf-IERLAND, or PARKVILLE, NEW YORK.

ORE CRUSH ER VAND AMLGAMATOR.

SPECIFICATION forming` part of Letters Patent No. 533,971,vdatedFebruary 12, 1895. Appneeuen ned negeer 5.1893. Renewed Aegeetzz. 1894.serrano. 521.003- Nomode1 To all whom it mwyconcern:

Be it known that LJAMES SUTHERLAND, of Parkville, in the county of Kingsand State of New York, have invented a new and useful Improvement in OreCrushers and Amalgamators, of which the following is a specification.

'My invention relates to an improvement in ore crushers and amalgamatorsin which two tables are arranged to rotate in opposite directions abouta hollow shaft, said tables be ing spaced apart by mullers geared withthe opposite faces of the tables, the hollow shaft serving as an outletfor the pulverized ore and water.

A practical embodiment of myinvention is represented in the accompanyingdrawings, in which- Figure l is a vertical section through the casing,revolving tables, driving gear and supports, and Fig. 2 is a top planview, the casing being removed and aportion of the upper table to showthe position of the mullers with respect to the lower table.

The support for the several parts may be of any well known or approvedstructure, 'in the present instance consisting of a base l frame Asurmounted by uprights a framed together by cross girders a. A casing,consisting of a top or cap piece B and a base piece B is supported uponthe frame, the base piece B being provided with an annular concavedepression b along th`e lowest portion of which there is an annularrecess b for the purpose of retaining any pulp which shall escapebetween the casing and thelower table and said recess b may be providedwith mercury in order that the amalgamation of such escaped ore may takeplace therein. A vertical hollow shaft C is mounted in suitable bearingsin the frame work and in the center of the C mounted on the shaft C andsupported-vertically by means of ball bearings c',y interposed between aiiange on its lower end and the hub of a gear wheel F liXed to the shaftC. The opposite faces of the tables D and D are made of hardenedmaterial suitable to withstand, as far as possible; the wearing actionof the material to be crushed and are so shaped as to conform in generalto the conical shaped mullers G which are interposed between thegrinding faces.

The number of mullers interposed may be determined at pleasure. In thepresent instance I have shown four, located at a quadrant distanceapart. The muller is provided with annular ribs g at intervals apartbeginning from its smaller end toward the central shaft which annularribs are adapted to work in annular grooves d in the faces of thetables. Intermediate ot' its ends the muller is provided with annulargear g adapted to intermesh with corresponding annular gear d in theopposite faces of the tables and exterior to the gear g', which ispreferably located at the largest portion 4of the muller. The saidmuller is tapered off bluntly to its apex g2, and presents-intermediateof its apex and the gear-a smooth grinding surface.

The sleeve which carries the lower rotary table has fixed thereon a gearF', corresponding to the gear F, anda single driving pinion h on a driveshaft H provided with a band pulley h intermeshes with the two gears Fand F', driving them, and hence the tables, simultaneously in oppositedirections. The rotary motion of the tables D and D in oppositedirections also cause the mullers G to rotate upon their axes by thegear connection between the mullers and the faces of the tables.

The ore to be pulverized is fed, together with water, into the open topb2 of the top portion B of the casing past the tapered shield e locatedover the open upper end of the vertical shaft C and thence down withinthe casing through suitable openings d2 into an annular chamber cl3 inthe upper table and thence through openings d4 near the center of thetable into the space between the two tables where it becomes acted uponby the contact surfaces of the mullers and opposite tables as itgradually inds its way outwardly to the IOO opening between the outeredges of the two tables and is forced thence upwardly around the uppertable, a space being left between the casing and the upper table for itspassage back and into the upper open end of the shaft C and thence downinto the amalgamator I. The upper open end of the shaft C may beprovided with a guide c2 for deflecting the crushed material into itsupper end, the said guide c2 and shield e being supported on theabutment c by means of standards c3.

lVater, in addition to that which enters the casing with the ore, isadmitted through a pipe K into the space between the lower revolvingtable and casing and oil to keep the parts lubricated is admitted from acup L at the top of the casing down through a pipe Z extending withinthe upper end of the vertical shaft O to a cross pipe Z whichdistributes it to the stuffing box connected with the lower table inwhich the shaft C rotates. Oil is also admitted through a pipe L to thestuffing box, forming a joint between the casing and vthe sleeve C.

It is to be understood that the gear teeth on the mullers and the facesof the rotating tables are to be hardened to form effective grindingsurfaces as the ore in passing from the inner to the outer space betweenthe tables is forced to pass between said teeth.

To accommodate pieces of ore of various sizes or masses of ore whichshall vary in hardness, the upper rotary table D is permitted to move upand down against the tension of the spring E.

What I claim is- 1. A grinding mill, comprising upper and lower tableshaving grinding surfaces between which the material is fed, meansforrotating one of the tables relatively to the other, a hollow deliveryshaft at the axis of rotation of said rotary table with a receivingmouth above the rotary table and means for directing the ground materialalong the exterior of the upper table from the grinding surfaces to thereceiving mouth of the hollow delivery shaft, substantially as setforth.

2. The combination with the upper and lower grinding tables and meansfor rotating them simultaneously in opposite directions, of a hollowshaft having a receiving mouth located above the upper table and thecasing surrounding the grinding tables and forming between it and theexterior of the upper table a passageway to the receiving mouth of thehollow shaft, the said hollow shaft forming an outlet for the pulverizedore after it has passed between the grinding tables, substantially asset forth.

The combination with the grinding tables and means for rotating one ofthem relatively to the other, of one or more mullers interposed betweenthe opposite faces of the grinding tables, the said m ullers beinggeared to the opposite faces of the grinding tables, substantially asset forth.

4. The combination with the casing and the rotating grinding tableslocated therein, of a general outlet for the pulverized ore through theshaft at the center of the grinding tables and an amalgamating troughlocated in the bottom of the casing beneath the lower table foramalgamating the ore which shall escape between the lower table and thecasing, substantially as set forth.

5. The combination with the grinding tables of a casing having anamalgamating trough beneath the tables, the lower table forming a shieldor cover over the trough, substantially as set forth.

6. The combination with the grinding tables and means for rotating oneof them relatively to the other,of one or more mullers interposedbetween the opposite faces of the grinding tables, the said mullersbeing provided with a series of annular ribs and the opposite faces ofthe grinding tables being provided with a corresponding series ofannular grooves, the said mullers being geared to the opposite faces ofthe grinding tables, substantially as set forth.

JAMES SUTHERLAND.

Witnesses:

FREDK. IIAYNES, IRENE B. DECKER.

